1 files changed, 128 insertions, 85 deletions

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 983245c0867c..120fa05a39ff 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Broadcom GENET (Gigabit Ethernet) controller driver
  *
  * Copyright (c) 2014-2017 Broadcom
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #define pr_fmt(fmt)				"bcmgenet: " fmt
@@ -643,7 +640,7 @@ static void bcmgenet_set_rx_coalesce(struct bcmgenet_rx_ring *ring,
 static void bcmgenet_set_ring_rx_coalesce(struct bcmgenet_rx_ring *ring,
 					  struct ethtool_coalesce *ec)
 {
-	struct net_dim_cq_moder moder;
+	struct dim_cq_moder moder;
 	u32 usecs, pkts;
 
 	ring->rx_coalesce_usecs = ec->rx_coalesce_usecs;
@@ -1127,6 +1124,7 @@ static const struct ethtool_ops bcmgenet_ethtool_ops = {
 	.set_coalesce		= bcmgenet_set_coalesce,
 	.get_link_ksettings	= bcmgenet_get_link_ksettings,
 	.set_link_ksettings	= bcmgenet_set_link_ksettings,
+	.get_ts_info		= ethtool_op_get_ts_info,
 };
 
 /* Power down the unimac, based on mode. */
@@ -1665,7 +1663,7 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
 	if (ring->free_bds <= (MAX_SKB_FRAGS + 1))
 		netif_tx_stop_queue(txq);
 
-	if (!skb->xmit_more || netif_xmit_stopped(txq))
+	if (!netdev_xmit_more() || netif_xmit_stopped(txq))
 		/* Packets are ready, update producer index */
 		bcmgenet_tdma_ring_writel(priv, ring->index,
 					  ring->prod_index, TDMA_PROD_INDEX);
@@ -1898,7 +1896,7 @@ static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
 {
 	struct bcmgenet_rx_ring *ring = container_of(napi,
 			struct bcmgenet_rx_ring, napi);
-	struct net_dim_sample dim_sample;
+	struct dim_sample dim_sample = {};
 	unsigned int work_done;
 
 	work_done = bcmgenet_desc_rx(ring, budget);
@@ -1909,8 +1907,8 @@ static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
 	}
 
 	if (ring->dim.use_dim) {
-		net_dim_sample(ring->dim.event_ctr, ring->dim.packets,
-			       ring->dim.bytes, &dim_sample);
+		dim_update_sample(ring->dim.event_ctr, ring->dim.packets,
+				  ring->dim.bytes, &dim_sample);
 		net_dim(&ring->dim.dim, dim_sample);
 	}
 
@@ -1919,16 +1917,16 @@ static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
 
 static void bcmgenet_dim_work(struct work_struct *work)
 {
-	struct net_dim *dim = container_of(work, struct net_dim, work);
+	struct dim *dim = container_of(work, struct dim, work);
 	struct bcmgenet_net_dim *ndim =
 			container_of(dim, struct bcmgenet_net_dim, dim);
 	struct bcmgenet_rx_ring *ring =
 			container_of(ndim, struct bcmgenet_rx_ring, dim);
-	struct net_dim_cq_moder cur_profile =
+	struct dim_cq_moder cur_profile =
 			net_dim_get_rx_moderation(dim->mode, dim->profile_ix);
 
 	bcmgenet_set_rx_coalesce(ring, cur_profile.usec, cur_profile.pkts);
-	dim->state = NET_DIM_START_MEASURE;
+	dim->state = DIM_START_MEASURE;
 }
 
 /* Assign skb to RX DMA descriptor. */
@@ -1998,8 +1996,6 @@ static void reset_umac(struct bcmgenet_priv *priv)
 
 	/* issue soft reset with (rg)mii loopback to ensure a stable rxclk */
 	bcmgenet_umac_writel(priv, CMD_SW_RESET | CMD_LCL_LOOP_EN, UMAC_CMD);
-	udelay(2);
-	bcmgenet_umac_writel(priv, 0, UMAC_CMD);
 }
 
 static void bcmgenet_intr_disable(struct bcmgenet_priv *priv)
@@ -2020,6 +2016,8 @@ static void bcmgenet_link_intr_enable(struct bcmgenet_priv *priv)
 	 */
 	if (priv->internal_phy) {
 		int0_enable |= UMAC_IRQ_LINK_EVENT;
+		if (GENET_IS_V1(priv) || GENET_IS_V2(priv) || GENET_IS_V3(priv))
+			int0_enable |= UMAC_IRQ_PHY_DET_R;
 	} else if (priv->ext_phy) {
 		int0_enable |= UMAC_IRQ_LINK_EVENT;
 	} else if (priv->phy_interface == PHY_INTERFACE_MODE_MOCA) {
@@ -2085,7 +2083,7 @@ static void bcmgenet_init_dim(struct bcmgenet_rx_ring *ring,
 	struct bcmgenet_net_dim *dim = &ring->dim;
 
 	INIT_WORK(&dim->dim.work, cb);
-	dim->dim.mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+	dim->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
 	dim->event_ctr = 0;
 	dim->packets = 0;
 	dim->bytes = 0;
@@ -2094,7 +2092,7 @@ static void bcmgenet_init_dim(struct bcmgenet_rx_ring *ring,
 static void bcmgenet_init_rx_coalesce(struct bcmgenet_rx_ring *ring)
 {
 	struct bcmgenet_net_dim *dim = &ring->dim;
-	struct net_dim_cq_moder moder;
+	struct dim_cq_moder moder;
 	u32 usecs, pkts;
 
 	usecs = ring->rx_coalesce_usecs;
@@ -2518,19 +2516,14 @@ static int bcmgenet_dma_teardown(struct bcmgenet_priv *priv)
 static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
 {
 	struct netdev_queue *txq;
-	struct sk_buff *skb;
-	struct enet_cb *cb;
 	int i;
 
 	bcmgenet_fini_rx_napi(priv);
 	bcmgenet_fini_tx_napi(priv);
 
-	for (i = 0; i < priv->num_tx_bds; i++) {
-		cb = priv->tx_cbs + i;
-		skb = bcmgenet_free_tx_cb(&priv->pdev->dev, cb);
-		if (skb)
-			dev_kfree_skb(skb);
-	}
+	for (i = 0; i < priv->num_tx_bds; i++)
+		dev_kfree_skb(bcmgenet_free_tx_cb(&priv->pdev->dev,
+						  priv->tx_cbs + i));
 
 	for (i = 0; i < priv->hw_params->tx_queues; i++) {
 		txq = netdev_get_tx_queue(priv->dev, priv->tx_rings[i].queue);
@@ -2583,7 +2576,8 @@ static int bcmgenet_init_dma(struct bcmgenet_priv *priv)
 	}
 
 	/* Init rDma */
-	bcmgenet_rdma_writel(priv, DMA_MAX_BURST_LENGTH, DMA_SCB_BURST_SIZE);
+	bcmgenet_rdma_writel(priv, priv->dma_max_burst_length,
+			     DMA_SCB_BURST_SIZE);
 
 	/* Initialize Rx queues */
 	ret = bcmgenet_init_rx_queues(priv->dev);
@@ -2596,7 +2590,8 @@ static int bcmgenet_init_dma(struct bcmgenet_priv *priv)
 	}
 
 	/* Init tDma */
-	bcmgenet_tdma_writel(priv, DMA_MAX_BURST_LENGTH, DMA_SCB_BURST_SIZE);
+	bcmgenet_tdma_writel(priv, priv->dma_max_burst_length,
+			     DMA_SCB_BURST_SIZE);
 
 	/* Initialize Tx queues */
 	bcmgenet_init_tx_queues(priv->dev);
@@ -2618,11 +2613,16 @@ static void bcmgenet_irq_task(struct work_struct *work)
 	priv->irq0_stat = 0;
 	spin_unlock_irq(&priv->lock);
 
+	if (status & UMAC_IRQ_PHY_DET_R &&
+	    priv->dev->phydev->autoneg != AUTONEG_ENABLE) {
+		phy_init_hw(priv->dev->phydev);
+		genphy_config_aneg(priv->dev->phydev);
+	}
+
 	/* Link UP/DOWN event */
-	if (status & UMAC_IRQ_LINK_EVENT) {
-		priv->dev->phydev->link = !!(status & UMAC_IRQ_LINK_UP);
+	if (status & UMAC_IRQ_LINK_EVENT)
 		phy_mac_interrupt(priv->dev->phydev);
-	}
+
 }
 
 /* bcmgenet_isr1: handle Rx and Tx priority queues */
@@ -2717,7 +2717,7 @@ static irqreturn_t bcmgenet_isr0(int irq, void *dev_id)
 	}
 
 	/* all other interested interrupts handled in bottom half */
-	status &= UMAC_IRQ_LINK_EVENT;
+	status &= (UMAC_IRQ_LINK_EVENT | UMAC_IRQ_PHY_DET_R);
 	if (status) {
 		/* Save irq status for bottom-half processing. */
 		spin_lock_irqsave(&priv->lock, flags);
@@ -3086,39 +3086,42 @@ static void bcmgenet_timeout(struct net_device *dev)
 	netif_tx_wake_all_queues(dev);
 }
 
-#define MAX_MC_COUNT	16
+#define MAX_MDF_FILTER	17
 
 static inline void bcmgenet_set_mdf_addr(struct bcmgenet_priv *priv,
 					 unsigned char *addr,
-					 int *i,
-					 int *mc)
+					 int *i)
 {
-	u32 reg;
-
 	bcmgenet_umac_writel(priv, addr[0] << 8 | addr[1],
 			     UMAC_MDF_ADDR + (*i * 4));
 	bcmgenet_umac_writel(priv, addr[2] << 24 | addr[3] << 16 |
 			     addr[4] << 8 | addr[5],
 			     UMAC_MDF_ADDR + ((*i + 1) * 4));
-	reg = bcmgenet_umac_readl(priv, UMAC_MDF_CTRL);
-	reg |= (1 << (MAX_MC_COUNT - *mc));
-	bcmgenet_umac_writel(priv, reg, UMAC_MDF_CTRL);
 	*i += 2;
-	(*mc)++;
 }
 
 static void bcmgenet_set_rx_mode(struct net_device *dev)
 {
 	struct bcmgenet_priv *priv = netdev_priv(dev);
 	struct netdev_hw_addr *ha;
-	int i, mc;
+	int i, nfilter;
 	u32 reg;
 
 	netif_dbg(priv, hw, dev, "%s: %08X\n", __func__, dev->flags);
 
-	/* Promiscuous mode */
+	/* Number of filters needed */
+	nfilter = netdev_uc_count(dev) + netdev_mc_count(dev) + 2;
+
+	/*
+	 * Turn on promicuous mode for three scenarios
+	 * 1. IFF_PROMISC flag is set
+	 * 2. IFF_ALLMULTI flag is set
+	 * 3. The number of filters needed exceeds the number filters
+	 *    supported by the hardware.
+	*/
 	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
-	if (dev->flags & IFF_PROMISC) {
+	if ((dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) ||
+	    (nfilter > MAX_MDF_FILTER)) {
 		reg |= CMD_PROMISC;
 		bcmgenet_umac_writel(priv, reg, UMAC_CMD);
 		bcmgenet_umac_writel(priv, 0, UMAC_MDF_CTRL);
@@ -3128,32 +3131,24 @@ static void bcmgenet_set_rx_mode(struct net_device *dev)
 		bcmgenet_umac_writel(priv, reg, UMAC_CMD);
 	}
 
-	/* UniMac doesn't support ALLMULTI */
-	if (dev->flags & IFF_ALLMULTI) {
-		netdev_warn(dev, "ALLMULTI is not supported\n");
-		return;
-	}
-
 	/* update MDF filter */
 	i = 0;
-	mc = 0;
 	/* Broadcast */
-	bcmgenet_set_mdf_addr(priv, dev->broadcast, &i, &mc);
+	bcmgenet_set_mdf_addr(priv, dev->broadcast, &i);
 	/* my own address.*/
-	bcmgenet_set_mdf_addr(priv, dev->dev_addr, &i, &mc);
-	/* Unicast list*/
-	if (netdev_uc_count(dev) > (MAX_MC_COUNT - mc))
-		return;
+	bcmgenet_set_mdf_addr(priv, dev->dev_addr, &i);
 
-	if (!netdev_uc_empty(dev))
-		netdev_for_each_uc_addr(ha, dev)
-			bcmgenet_set_mdf_addr(priv, ha->addr, &i, &mc);
-	/* Multicast */
-	if (netdev_mc_empty(dev) || netdev_mc_count(dev) >= (MAX_MC_COUNT - mc))
-		return;
+	/* Unicast */
+	netdev_for_each_uc_addr(ha, dev)
+		bcmgenet_set_mdf_addr(priv, ha->addr, &i);
 
+	/* Multicast */
 	netdev_for_each_mc_addr(ha, dev)
-		bcmgenet_set_mdf_addr(priv, ha->addr, &i, &mc);
+		bcmgenet_set_mdf_addr(priv, ha->addr, &i);
+
+	/* Enable filters */
+	reg = GENMASK(MAX_MDF_FILTER - 1, MAX_MDF_FILTER - nfilter);
+	bcmgenet_umac_writel(priv, reg, UMAC_MDF_CTRL);
 }
 
 /* Set the hardware MAC address. */
@@ -3427,12 +3422,48 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv)
 		params->words_per_bd);
 }
 
+struct bcmgenet_plat_data {
+	enum bcmgenet_version version;
+	u32 dma_max_burst_length;
+};
+
+static const struct bcmgenet_plat_data v1_plat_data = {
+	.version = GENET_V1,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v2_plat_data = {
+	.version = GENET_V2,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v3_plat_data = {
+	.version = GENET_V3,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v4_plat_data = {
+	.version = GENET_V4,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v5_plat_data = {
+	.version = GENET_V5,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data bcm2711_plat_data = {
+	.version = GENET_V5,
+	.dma_max_burst_length = 0x08,
+};
+
 static const struct of_device_id bcmgenet_match[] = {
-	{ .compatible = "brcm,genet-v1", .data = (void *)GENET_V1 },
-	{ .compatible = "brcm,genet-v2", .data = (void *)GENET_V2 },
-	{ .compatible = "brcm,genet-v3", .data = (void *)GENET_V3 },
-	{ .compatible = "brcm,genet-v4", .data = (void *)GENET_V4 },
-	{ .compatible = "brcm,genet-v5", .data = (void *)GENET_V5 },
+	{ .compatible = "brcm,genet-v1", .data = &v1_plat_data },
+	{ .compatible = "brcm,genet-v2", .data = &v2_plat_data },
+	{ .compatible = "brcm,genet-v3", .data = &v3_plat_data },
+	{ .compatible = "brcm,genet-v4", .data = &v4_plat_data },
+	{ .compatible = "brcm,genet-v5", .data = &v5_plat_data },
+	{ .compatible = "brcm,bcm2711-genet-v5", .data = &bcm2711_plat_data },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bcmgenet_match);
@@ -3442,10 +3473,10 @@ static int bcmgenet_probe(struct platform_device *pdev)
 	struct bcmgenet_platform_data *pd = pdev->dev.platform_data;
 	struct device_node *dn = pdev->dev.of_node;
 	const struct of_device_id *of_id = NULL;
+	const struct bcmgenet_plat_data *pdata;
 	struct bcmgenet_priv *priv;
 	struct net_device *dev;
 	const void *macaddr;
-	struct resource *r;
 	unsigned int i;
 	int err = -EIO;
 	const char *phy_mode_str;
@@ -3466,27 +3497,23 @@ static int bcmgenet_probe(struct platform_device *pdev)
 
 	priv = netdev_priv(dev);
 	priv->irq0 = platform_get_irq(pdev, 0);
+	if (priv->irq0 < 0) {
+		err = priv->irq0;
+		goto err;
+	}
 	priv->irq1 = platform_get_irq(pdev, 1);
-	priv->wol_irq = platform_get_irq(pdev, 2);
-	if (!priv->irq0 || !priv->irq1) {
-		dev_err(&pdev->dev, "can't find IRQs\n");
-		err = -EINVAL;
+	if (priv->irq1 < 0) {
+		err = priv->irq1;
 		goto err;
 	}
+	priv->wol_irq = platform_get_irq_optional(pdev, 2);
 
-	if (dn) {
+	if (dn)
 		macaddr = of_get_mac_address(dn);
-		if (!macaddr) {
-			dev_err(&pdev->dev, "can't find MAC address\n");
-			err = -EINVAL;
-			goto err;
-		}
-	} else {
+	else
 		macaddr = pd->mac_address;
-	}
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(&pdev->dev, r);
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base)) {
 		err = PTR_ERR(priv->base);
 		goto err;
@@ -3496,7 +3523,12 @@ static int bcmgenet_probe(struct platform_device *pdev)
 
 	SET_NETDEV_DEV(dev, &pdev->dev);
 	dev_set_drvdata(&pdev->dev, dev);
-	ether_addr_copy(dev->dev_addr, macaddr);
+	if (IS_ERR_OR_NULL(macaddr) || !is_valid_ether_addr(macaddr)) {
+		dev_warn(&pdev->dev, "using random Ethernet MAC\n");
+		eth_hw_addr_random(dev);
+	} else {
+		ether_addr_copy(dev->dev_addr, macaddr);
+	}
 	dev->watchdog_timeo = 2 * HZ;
 	dev->ethtool_ops = &bcmgenet_ethtool_ops;
 	dev->netdev_ops = &bcmgenet_netdev_ops;
@@ -3523,10 +3555,14 @@ static int bcmgenet_probe(struct platform_device *pdev)
 
 	priv->dev = dev;
 	priv->pdev = pdev;
-	if (of_id)
-		priv->version = (enum bcmgenet_version)of_id->data;
-	else
+	if (of_id) {
+		pdata = of_id->data;
+		priv->version = pdata->version;
+		priv->dma_max_burst_length = pdata->dma_max_burst_length;
+	} else {
 		priv->version = pd->genet_version;
+		priv->dma_max_burst_length = DMA_MAX_BURST_LENGTH;
+	}
 
 	priv->clk = devm_clk_get(&priv->pdev->dev, "enet");
 	if (IS_ERR(priv->clk)) {
@@ -3611,6 +3647,11 @@ static int bcmgenet_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void bcmgenet_shutdown(struct platform_device *pdev)
+{
+	bcmgenet_remove(pdev);
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int bcmgenet_resume(struct device *d)
 {
@@ -3645,6 +3686,7 @@ static int bcmgenet_resume(struct device *d)
 	phy_init_hw(dev->phydev);
 
 	/* Speed settings must be restored */
+	genphy_config_aneg(dev->phydev);
 	bcmgenet_mii_config(priv->dev, false);
 
 	bcmgenet_set_hw_addr(priv, dev->dev_addr);
@@ -3729,6 +3771,7 @@ static SIMPLE_DEV_PM_OPS(bcmgenet_pm_ops, bcmgenet_suspend, bcmgenet_resume);
 static struct platform_driver bcmgenet_driver = {
 	.probe	= bcmgenet_probe,
 	.remove	= bcmgenet_remove,
+	.shutdown = bcmgenet_shutdown,
 	.driver	= {
 		.name	= "bcmgenet",
 		.of_match_table = bcmgenet_match,